Django实现文件上传下载功能

框架(架构)  /  管理员 发布于 7年前   161

项目介绍

最近学习django，通过文件上传下载这个小项目，总结下常用的知识点。
做这个案例我有以下需求：

1.要支持一次上传多个文件

2.支持上传后记录上传的数据以及列表展示

3.支持下载和删除文件记录

效果展示

数据库记录

开发步骤

创建项目：

django-admin startproject file_uploadcd file_uploadpython manage.py startapp uploader

目录结构:

0.settings.py

LANGUAGE_CODE = 'zh-Hans'TIME_ZONE = 'Asia/Shanghai'USE_I18N = TrueUSE_L10N = TrueUSE_TZ = False

1.urls.py

父：

from django.contrib import adminfrom django.urls import path, include urlpatterns = [ path('admin/', admin.site.urls), path('uploader/', include('uploader.urls'))]

子：

from django.contrib import adminfrom django.urls import path, includefrom . import views app_name = 'uploader' urlpatterns = [ path('', views.upload, name='upload'), # 上传 path('list/', views.list), # 列表 path('download/<id>', views.download, name='download'), # 下载 path('delete/<id>', views.delete, name='delete'), # 删除]

2.models.py

from django.db import modelsfrom django.utils import timezone '''文件记录'''class FileInfo(models.Model): file_name = models.CharField(max_length=500) file_size = models.DecimalField(max_digits=10, decimal_places=0) file_path = models.CharField(max_length=500) upload_time = models.DateTimeField(default=timezone.now())

3.forms.py

from django import forms '''上传表单'''class UploadForm(forms.Form): file = forms.FileField( widget=forms.ClearableFileInput(attrs={'multiple': True}), # 支持多文件上传 label='选择文件...', help_text='最大100M' )

4.views.py

from django.shortcuts import renderfrom django.http import HttpResponseRedirectfrom django.http import HttpResponseRedirectfrom django.http import FileResponsefrom django.template import RequestContextfrom django.urls import reversefrom django.utils.http import urlquote from .models import FileInfofrom .forms import UploadFormimport os  # 上传文件def upload(request): # Handle file upload if request.method == 'POST': form = UploadForm(request.POST, request.FILES) if form.is_valid():  files = request.FILES.getlist('file')  for f in files:  file_info = FileInfo(file_name=f.name, file_size=1 if 0 < f.size < 1024 else f.size / 1024, file_path=os.path.join('D:\\upload', f.name))  file_info.save()  # 上传  destination = open(os.path.join("D:\\upload", f.name), 'wb+')  for chunk in f.chunks():   destination.write(chunk)  destination.close()   # 返回上传页  return HttpResponseRedirect('/uploader/list') else: form = UploadForm() # A empty, unbound form return render(request, 'uploader/upload.html', {'form': form})  # 文件列表def list(request): file_infos = FileInfo.objects.all()  return render(request, 'uploader/list.html', {'file_infos': file_infos})  # 下载文件def download(request, id): file_info = FileInfo.objects.get(id=id) print('下载的文件名：' + file_info.file_name) file = open(file_info.file_path, 'rb') response = FileResponse(file) response['Content-Disposition'] = 'attachment;filename="%s"' % urlquote(file_info.file_name) return response  # 删除文件def delete(request, id): file_info = FileInfo.objects.get(id=id) file_info.delete() file_infos = FileInfo.objects.all()  return HttpResponseRedirect('/uploader/list')

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。